<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="width=320px" initial-scale:0.5;/>
		<title></title>
		<style type="text/css">
			*{margin: 0;padding: 0;}
			.search{height:35px;border:1px solid gainsboro;margin:0 10px;
			    justify-content: space-between;display: flex;}
			.search input:first-child{flex-grow: 1;}
			.search input:last-child{width:100px;height:35px;background: deepskyblue;border:0;outline: none;}
		</style>
	</head>
	<body>
		<form action="" method="post">
		<div class="search">
			<input type="text" /><input type="submit" value="百度一下"/>
		</div>
		</form> 
	</body>
</html>
